Water Quality Instruments

Applications we specialize in:

pH Measurement & Control

pH meters are used in wastewater neutralization, process control, drinking water or wastewater permit compliance. Sensor selection is key.  We provide unique sensors for the following water types:

  • Clean – processes include:
    • Filtered water used in pharmaceutical manufacturing
    • Power generation
    • Food production
    • Potable water
    • Reverse osmosis for water filtration
    • Boiler feed water
    • Boiler condensate
  • Dirty – these types of applications are where sensors can be coated, but the electrode is unharmed. The coating may be sticky or a sludge. Applications include:
    • Municipal and industrial wastewater treatment plants
    • Food manufacturers
    • Other industrial facilities
  • Aggressive – this water often creates hard coatings that crystallize on the sensor. Applications include:
    • Parts wasting
    • Plating
    • Metal finishing
    • Chemical production and refineries 

Chlorine Monitoring

This is a difficult and often misunderstood measurement to make for industrial water treatment.

Here’s why: Chlorine in solution is a weak acid, so the concentration of active chlorine is affected by changes in pH.  Furthermore, if Ammonia is present, chlorine reaction time changes. Each application is different and may require use of ORP measurement, free-chlorine, combined chlorine or total chlorine measurements.  We can help identify the most straightforward sensing technology for you.

Conductivity Monitoring

Electrical conductivity is the ability of an electrical current to pass through water.

This can change based on the concentration of salts, minerals, acids or caustics dissolved in the water, and the resulting conductivity measurement is an indication of water purity.  This is especially important in these applications:

  • Reverse osmosis filtration
  • Boiler feed
  • Boiler condensate water
  • Cooling towers
  • CIP cleaning
  • Plating
  • Metal finishing
  • Pickling
  • Power generation
  • Water used in food and pharmaceutical production.

These systems are most often used for process control for permit compliance.